Looking for some suggestions on what to include in your landscape?
Below you'll look at some hardy plant for Zone 6 and their descriptions to give you an idea.
Shrubs:
Hydrangea (Hydrangea macrophylla) - Produces large clusters of pink, blue, purple, or white flowers, depending on soil pH.
Forsythia (Forsythia x intermedia) - Bright yellow flowers in early spring.
Rhododendron (Rhododendron spp.) - Wide range of colors including pink, red, purple, white, and yellow.
Boxwood (Buxus spp.) - Evergreen shrub with small, green leaves.
Spirea (Spiraea spp.) - Clusters of pink, white, or red flowers in spring or summer.
Lilac (Syringa spp.) - Fragrant, purple, pink, white, or yellow flowers in spring.
Trees:
Dogwood (Cornus spp.) - White, pink, or red flowers in spring, with red or yellow fall foliage.
Redbud (Cercis canadensis) - Violet-purple flowers in spring, with heart-shaped leaves that turn yellow in fall.
Japanese maple (Acer palmatum) - Delicate leaves in shades of red, orange, or purple in the fall, with some varieties also offering variegated leaves.
Magnolia (Magnolia spp.) - Large, fragrant flowers in pink, purple, yellow, or white, depending on the species.
Serviceberry (Amelanchier spp.) - White or pink flowers in spring, with orange, red, or purple fall foliage.
Flowering cherry (Prunus spp.) - Pink or white flowers in spring, with green leaves that turn yellow or orange in fall.